proguard.optimize.info
Class ExceptionInstructionChecker

java.lang.Object
  proguard.classfile.util.SimplifiedVisitor
      proguard.optimize.info.ExceptionInstructionChecker

All Implemented Interfaces:

ConstantVisitor, InstructionVisitor, MemberVisitor

public class ExceptionInstructionChecker
extends SimplifiedVisitor
implements InstructionVisitor, ConstantVisitor, MemberVisitor

This class can tell whether an instruction might throw exceptions.

Constructor Summary

ExceptionInstructionChecker()

Method Summary

boolean	mayThrowExceptions(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, Instruction instruction) Returns whether the given instruction may throw exceptions.
void	visitAnyInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, Instruction instruction) Visits any type of Instruction.
void	visitAnyMethodrefConstant(Clazz clazz, RefConstant refConstant) Visits any type of method RefConstant of the given class.
void	visitConstantInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, ConstantInstruction constantInstruction)
void	visitLibraryMethod(LibraryClass libraryClass, LibraryMethod libraryMethod)
void	visitProgramMethod(ProgramClass programClass, ProgramMethod programMethod)
void	visitSimpleInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, SimpleInstruction simpleInstruction)

Methods inherited from class proguard.classfile.util.SimplifiedVisitor

visitAnnotation, visitAnnotation, visitAnnotation, visitAnnotation, visitAnnotation, visitAnnotationDefaultAttribute, visitAnnotationElementValue, visitAnyAnnotationsAttribute, visitAnyAttribute, visitAnyClass, visitAnyConstant, visitAnyElementValue, visitAnyMember, visitAnyParameterAnnotationsAttribute, visitAnyRefConstant, visitAnyStackMapFrame, visitAnySwitchInstruction, visitAnyVerificationType, visitArrayElementValue, visitBranchInstruction, visitClassConstant, visitClassElementValue, visitCodeAttribute, visitConstantElementValue, visitConstantValueAttribute, visitDeprecatedAttribute, visitDeprecatedAttribute, visitDeprecatedAttribute, visitDeprecatedAttribute, visitDoubleConstant, visitDoubleType, visitEnclosingMethodAttribute, visitEnumConstantElementValue, visitExceptionsAttribute, visitFieldrefConstant, visitFloatConstant, visitFloatType, visitFullFrame, visitInnerClassesAttribute, visitIntegerConstant, visitIntegerType, visitInterfaceMethodrefConstant, visitLessZeroFrame, visitLibraryClass, visitLibraryField, visitLibraryMember, visitLineNumberTableAttribute, visitLocalVariableTableAttribute, visitLocalVariableTypeTableAttribute, visitLongConstant, visitLongType, visitLookUpSwitchInstruction, visitMethodrefConstant, visitMoreZeroFrame, visitNameAndTypeConstant, visitNullType, visitObjectType, visitProgramClass, visitProgramField, visitProgramMember, visitRuntimeInvisibleAnnotationsAttribute, visitRuntimeInvisibleAnnotationsAttribute, visitRuntimeInvisibleAnnotationsAttribute, visitRuntimeInvisibleAnnotationsAttribute, visitRuntimeInvisibleParameterAnnotationsAttribute, visitRuntimeVisibleAnnotationsAttribute, visitRuntimeVisibleAnnotationsAttribute, visitRuntimeVisibleAnnotationsAttribute, visitRuntimeVisibleAnnotationsAttribute, visitRuntimeVisibleParameterAnnotationsAttribute, visitSameOneFrame, visitSameZeroFrame, visitSignatureAttribute, visitSignatureAttribute, visitSignatureAttribute, visitSignatureAttribute, visitSourceDirAttribute, visitSourceFileAttribute, visitStackDoubleType, visitStackFloatType, visitStackIntegerType, visitStackLongType, visitStackMapAttribute, visitStackMapTableAttribute, visitStackNullType, visitStackObjectType, visitStackTopType, visitStackUninitializedThisType, visitStackUninitializedType, visitStringConstant, visitSyntheticAttribute, visitSyntheticAttribute, visitSyntheticAttribute, visitSyntheticAttribute, visitTableSwitchInstruction, visitTopType, visitUninitializedThisType, visitUninitializedType, visitUnknownAttribute, visitUtf8Constant, visitVariableInstruction, visitVariablesDoubleType, visitVariablesFloatType, visitVariablesIntegerType, visitVariablesLongType, visitVariablesNullType, visitVariablesObjectType, visitVariablesTopType, visitVariablesUninitializedThisType, visitVariablesUninitializedType

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface proguard.classfile.instruction.visitor.InstructionVisitor

visitBranchInstruction, visitLookUpSwitchInstruction, visitTableSwitchInstruction, visitVariableInstruction

Methods inherited from interface proguard.classfile.constant.visitor.ConstantVisitor

visitClassConstant, visitDoubleConstant, visitFieldrefConstant, visitFloatConstant, visitIntegerConstant, visitInterfaceMethodrefConstant, visitLongConstant, visitMethodrefConstant, visitNameAndTypeConstant, visitStringConstant, visitUtf8Constant

Methods inherited from interface proguard.classfile.visitor.MemberVisitor

visitLibraryField, visitProgramField

Constructor Detail

ExceptionInstructionChecker

public ExceptionInstructionChecker()

Method Detail

mayThrowExceptions

public boolean mayThrowExceptions(Clazz clazz,
                                  Method method,
                                  CodeAttribute codeAttribute,
                                  int offset,
                                  Instruction instruction)

Returns whether the given instruction may throw exceptions.

visitAnyInstruction

public void visitAnyInstruction(Clazz clazz,
                                Method method,
                                CodeAttribute codeAttribute,
                                int offset,
                                Instruction instruction)

Description copied from class: SimplifiedVisitor

Visits any type of Instruction.

Overrides:

visitAnyInstruction in class SimplifiedVisitor

visitSimpleInstruction

public void visitSimpleInstruction(Clazz clazz,
                                   Method method,
                                   CodeAttribute codeAttribute,
                                   int offset,
                                   SimpleInstruction simpleInstruction)

Specified by:

visitSimpleInstruction in interface InstructionVisitor

Overrides:

visitSimpleInstruction in class SimplifiedVisitor

visitConstantInstruction

public void visitConstantInstruction(Clazz clazz,
                                     Method method,
                                     CodeAttribute codeAttribute,
                                     int offset,
                                     ConstantInstruction constantInstruction)

Specified by:

visitConstantInstruction in interface InstructionVisitor

Overrides:

visitConstantInstruction in class SimplifiedVisitor

visitAnyMethodrefConstant

public void visitAnyMethodrefConstant(Clazz clazz,
                                      RefConstant refConstant)

Description copied from class: SimplifiedVisitor

Visits any type of method RefConstant of the given class.

Overrides:

visitAnyMethodrefConstant in class SimplifiedVisitor

visitProgramMethod

public void visitProgramMethod(ProgramClass programClass,
                               ProgramMethod programMethod)

Specified by:

visitProgramMethod in interface MemberVisitor

Overrides:

visitProgramMethod in class SimplifiedVisitor

visitLibraryMethod

public void visitLibraryMethod(LibraryClass libraryClass,
                               LibraryMethod libraryMethod)

Specified by:

visitLibraryMethod in interface MemberVisitor

Overrides:

visitLibraryMethod in class SimplifiedVisitor